# Smart Diffuser vs Aroma IoT

The clearest difference is rating: Smart Diffuser at 2.7 against Aroma IoT's 1.7. Smart Diffuser also leads on iOS requirement (12.0 vs 15.0). Aroma IoT's advantage is ratings volume (19 vs 6). On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Smart Diffuser holds the better App Store score, 2.7 against 1.7. Both are backed by a comparable volume of ratings — 6 and 19 respectively. Written reviews point the same way: 25% of Smart Diffuser's written reviews are positive against 18% of Aroma IoT's.

Smart Diffuser ships an update every 6 weeks, Aroma IoT monthly. The most recent releases landed on July 7, 2026 and August 5, 2026 respectively.

## The numbers

| Metric | Smart Diffuser | Aroma IoT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.7 (6 ratings)](https://appshunter.io/ios/app/smart-diffuser/id1436466932/reviews)** | [1.7 (19 ratings)](https://appshunter.io/ios/app/aroma-iot/id1479180534/reviews) |
| Number of ratings | 6 | **19** |
| Positive reviews | **25.0% of reviews** | 18.2% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Monthly** |
| Monetization | Free | Free |
| Size | 42 MB | 29 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [秦庚 蒋](https://appshunter.io/developer/1436462643) | [建美 王](https://appshunter.io/developer/1479180533) |

## What reviewers say

### Smart Diffuser

[App page](https://appshunter.io/ios/app/smart-diffuser/id1436466932)

Control your smart scent machine remotely via Wi-Fi. Adjust scent intensity, monitor oil levels, and manage multiple devices. Authorize other users and group machines for business use.

**Highlights:** Remote Wi-Fi control, Scent intensity adjustment, Oil level monitoring, User authorization, Device grouping, Employee account management

**In-app purchases:** none


### Aroma IoT

[App page](https://appshunter.io/ios/app/aroma-iot/id1479180534)

Control smart fragrance devices remotely via WiFi or mobile network. Manage device settings, view maintenance history, and group devices for efficient management. Offers authorization and employee management features.

**Highlights:** Remote device control, Network configuration, Maintenance records, Group management, Authorization management, Employee management, Intelligent search and sorting

**In-app purchases:** none


## Frequently asked questions

### Is Smart Diffuser free?

Smart Diffuser is free to download, with no in-app purchases.

### Is Aroma IoT free?

Aroma IoT is free to download, with no in-app purchases.

### Which has better reviews, Smart Diffuser or Aroma IoT?

Smart Diffuser is rated higher. Smart Diffuser averages 2.7 out of 5 from 6 ratings, while Aroma IoT averages 1.7 from 19 ratings.

### Do Smart Diffuser or Aroma IoT have ads?

Neither Smart Diffuser nor Aroma IoT shows ads.

### Which is updated more often, Smart Diffuser or Aroma IoT?

Smart Diffuser ships an update every 6 weeks, and Aroma IoT monthly. Most recently, Smart Diffuser was updated on July 7, 2026 and Aroma IoT on August 5, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*